It's true that a bad workman tends to blame everything, including his tools for failures. But it doesn't follow that the good workman doesn't blame the tools, because the tools can and often are the reason for failures. It only stands to reason, in case of a bad workman the reason for failure is likely himself and in case of a skillful one it's more likely the tools. Also, if you gained expertise in any field, you know that a good workman would always try to use the best tools available to him.